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Numerous proposed and developed superconducting fault current limiters and self-limiting transformers limit successfully fault currents but do not provide uninterrupted supplying of consumers. A design investigated in the work combines the…

Superconductivity · Physics 2009-11-11 V. Meerovich , V. Sokolovsky

Superconducting diodes enable dissipationless directional transport, yet achieving electrical tunability and scalability remains a major challenge for circuit-level integration. Here, we demonstrate an electrothermal-switch superconducting…

Semiconducting diode with nonreciprocal transport effect underlies the cornerstone of contemporary integrated circuits (ICs) technology. Due to isotropic superconducting properties and the lack of breaking of inversion symmetry for…

Heat and noise control is essential for the continued development of quantum technologies. For this purpose, a particularly powerful tool is the heat rectifier, which allows for heat transport in one configuration of two baths but not the…

Quantum Physics · Physics 2022-09-13 Kasper Poulsen , Nikolaj T. Zinner

Efficient electron-refrigeration based on a normal-metal/spin-filter/superconductor junction is proposed and demonstrated theoretically. The spin-filtering effect leads to values of the cooling power much higher than in conventional…

Mesoscale and Nanoscale Physics · Physics 2013-11-13 Shiro Kawabata , Asier Ozaeta , Andrey S. Vasenko , Frank W. J. Hekking , F. Sebastian Bergeret

We present a theoretical study of radiative heat transport in nonlinear solid-state quantum circuits. We give a detailed account of heat rectification effects, i.e. the asymmetry of heat current with respect to a reversal of the thermal…

Mesoscale and Nanoscale Physics · Physics 2009-04-28 Tomi Ruokola , Teemu Ojanen , Antti-Pekka Jauho

Thermal rectification which is a diode-like behavior of heat flux has been studied over a long time. However, a universal and systematic physical description is still lacking. In this letter, a perturbation theory of thermal rectification…

Mesoscale and Nanoscale Physics · Physics 2020-10-14 Chuang Zhang , Meng An , Zhaoli Guo , Songze Chen

We propose a possible route to achieve high thermoelectric efficiency in molecular junctions by combining a local chemical tuning of the molecular electronic states with the use of semiconducting electrodes. The former allows to control the…

Materials Science · Physics 2009-08-05 D. Nozaki , H. Sevinçli , W. Li , R. Gutierrez , G. Cuniberti

We investigate heat and charge transport through a diffusive SIF1F2N tunnel junction, where N (S) is a normal (superconducting) electrode, I is an insulator layer and F1,2 are two ferromagnets with arbitrary direction of magnetization. The…

Superconductivity · Physics 2015-06-04 A. Ozaeta , A. S. Vasenko , F. W. J. Hekking , F. S. Bergeret

Heat rectifiers would facilitate energy management operations such as cooling, or energy harvesting, but devices of practical interest are still missing. Understanding heat rectification at a fundamental level is key to help us find or…

Statistical Mechanics · Physics 2023-07-05 Javier Navarro , Juan Gonzalo Muga , Marisa Pons

In electronic cooling with superconducting tunnel junctions, the cooling power is counterbalanced by the interaction with phonons and by the heat flow from the overheated leads. We study aluminium-based coolers that are equipped with a…

Mesoscale and Nanoscale Physics · Physics 2014-11-07 H. Q. Nguyen , M. Meschke , H. Courtois , J. P. Pekola

Films of titanate nanosheets (approx. 1.8-nm layer thickness and 200-nm size) having a lamellar structure can form electrolytefilled semi-permeable channels containing tetrabutylammonium cations. By evaporation of a colloidal solution,…

Superconducting electronics are among the most promising alternatives to conventional CMOS technology thanks to the ultra-fast speed and ultra-high energy efficiency of the superconducting devices. Having a cryogenic control processor is…

Emerging Technologies · Computer Science 2023-09-29 Shamiul Alam , Dana S. Rampini , Bakhrom G. Oripov , Adam N. McCaughan , Ahmedullah Aziz

We demonstrate highly transparent silicon-vanadium and silicon-aluminum tunnel junctions with relatively low sub-gap leakage current and discuss how a trade-off typically encountered between transparency and leakage affects their…

Superconductivity · Physics 2021-08-06 A. Kemppinen , A. Ronzani , E. Mykkänen , J. Hätinen , J. S. Lehtinen , M. Prunnila

We propose a superconducting diode device comprising a central superconducting film flanked by two wires carrying an applied DC bias, suitably chosen so as to generate different asymmetric field profiles. Through numerical simulations of…

Superconductivity · Physics 2024-05-24 Leonardo Rodrigues Cadorim , Edson Sardella , Clécio Clemente de Souza Silva

A nanostructured thermoelectric device is designed by connecting a double-barrier resonant tunneling heterostructure to two electron reservoirs. Based on Landauers equation and Fermi-Dirac statistics, the exact solution of the heat flow is…

Mesoscale and Nanoscale Physics · Physics 2022-04-13 Tong Fu , Jianying Du , Shanhe Su , Guozhen Su , Jincan Chen

Phase-tunable hybrid devices, built upon nanostructures combining normal metal and superconductors, have been the subject of intense studies due to their numerous combinations of different charge and heat transport configurations. They…

Superconductivity · Physics 2017-10-25 Emanuele Enrico , Elia Strambini , Francesco Giazotto

A superconducting tunnel junction is used to directly extract quasiparticles from one of the leads of a single-Cooper-pair-transistor. The consequent reduction in quasiparticle density causes a lower rate of quasiparticle tunneling onto the…

Superconductivity · Physics 2012-09-18 A. J. Ferguson

The nonlinear thermoelectric properties of serially coupled quantum dots (SCQDs) embedded in a nanowire connected to metallic electrodes are theoretically studied in the Coulomb blockade regime. We demonstrate that the electron heat current…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Yen-Chun Tseng , David M T Kuo , Yia-chung Chang , Yan-Ting Lin

Ultrafast photon-assisted tunneling is shown to lead to large nonlinear dynamic currents that can be used to generate dc rectified current as well as higher order harmonic response from a metasurface-coupled tunnel diode. This artificial…

Mesoscale and Nanoscale Physics · Physics 2019-11-25 Paul S Davids , Erik Anderson , Jared Kirsch , Joshua Shank